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Sale Price $7.32.  
Original Price $8.10. Comp. value
Sale Price $1.22per coaster.
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Gravitational Blueshift Square Paper Coaster

4.8 out of 5 stars rating
630 Total Reviews |
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Square
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About Paper Coasters

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Paper CoasterCreate your own from scratch

Shape: Square

Don’t be the nagging host who follows guests around surreptitiously slipping coasters under their glasses. Ease your burden and add a personalized touch to your next party with fully customizable coasters. Balancing between reusable and disposable, these coasters perfectly transition from cocktail hours to receptions. Stock up today and never see a water ring again!

  • Dimensions: 4" x 4"
  • Material: Sturdy 50 pt. pulp board
  • Sold as sets of 6
  • Tough, durable, and absorbent – perfect for parties, weddings, or branding your business
  • Vibrant full-color one-sided printing

About This Design

Gravitational Blueshift Square Paper Coaster

Gravitational Blueshift Square Paper Coaster

A multi-colored, fractal representation of gravitational blueshifting; the shifting of light toward the blue end of the spectrum that occurs as photons become more energetic when falling into a gravity well. Customize by adding your own text. Unlike the more commonly known Doppler blueshift, an apparent effect which is the result of motion towards the observer, gravitational blueshift is real, independent of the received angle of the photon. Gravitational blueshift is a natural consequence of conservation of energy and mass-energy equivalence.
FractalFire
Bronze
Artwork designed by
Anchorage, Alaska
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Customer Reviews

4.8 out of 5 stars rating630 Total Reviews
524 total 5-star reviews78 total 4-star reviews15 total 3-star reviews6 total 2-star reviews7 total 1-star reviews
630 Reviews
Reviews for similar products
5.0 out of 5 stars rating
5 out of 5 stars rating
By J.August 14, 2019 • Verified Purchase
Square Coasters
Zazzle Reviewer Program
Can't wait to use our new Christmas coasters! They are so very cute! I love the whimsical design. Well made, sturdy and sizeable! These coasters are perfect for large casual parties even safe to have out by the pool! Colors are dynamic and vibrant and just as pictured. Quality of print is crisp and well defined with no blur.
5.0 out of 5 stars rating
5 out of 5 stars rating
By Charmtastic M.March 16, 2026 • Verified Purchase
Round Coasters
The "Charm'tastic Mile" Metal-Art Logo O's Colorway Bar/Restaurant coaster was absolutely amazing. Another 5-star product from Zazzle. .
5.0 out of 5 stars rating
5 out of 5 stars rating
By Charmtastic M.May 11, 2026 • Verified Purchase
Round Coasters
The "Charm'tastic Mile" 10th Anniversary (2016-26) Metal-Art Logo on a coaster looks amazing. Another 5-star product from ZAZZLE. Thank you. .

Tags

Paper Coasters
gravitygeekastrophysicssciencephysicsastronomyspacefractalredcustom
All Products
gravitygeekastrophysicssciencephysicsastronomyspacefractalredcustom

Other Info

Product ID: 256552469935296661
Created on: 6/16/2025, 8:21 AM
Rating: G 
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